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  2. Broadcast television systems - Wikipedia

    en.wikipedia.org/wiki/Broadcast_television_systems

    Analog television systems were standardized by the International Telecommunication Union (ITU) in 1961, [1] with each system designated by a letter (A-N) in combination with the color standard used (NTSC, PAL or SECAM) - for example PAL-B, NTSC-M, etc.). These analog systems for TV broadcasting dominated until the 2000s.

  3. Outline of technology - Wikipedia

    en.wikipedia.org/wiki/Outline_of_technology

    Building – Structure, typically with a roof and walls, standing more or less permanently in one place; Road – Land route; Bridge – Structure built to span physical obstacles; Canal – Artificial channel for water; Dam – Barrier that stops or restricts the flow of surface or underground streams

  4. Microwave oven - Wikipedia

    en.wikipedia.org/wiki/Microwave_oven

    A microwave oven or simply microwave is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range. [1] This induces polar molecules in the food to rotate and produce thermal energy (heat) in a process known as dielectric heating .

  5. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    The microwave generator is equipped with an antenna that allows it to concentrate the beam of electromagnetic waves in one preferred location and the beam is intercepted by the receiver, equipped with a similar antenna to the transmitter.

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  7. Sunbeam Products - Wikipedia

    en.wikipedia.org/wiki/Sunbeam_Products

    Sunbeam Products is an American company founded in 1897 that has produced electric home appliances under the Sunbeam name since 1910. Its products have included the Mixmaster mixer, the Sunbeam CG waffle iron, Coffeemaster (1938–1964) [2] and the fully automatic T20 toaster.